So... that spiderman shirt... (new job tease)

[Shippuu]

A red herring is not a lie. It is a misdirection; a distraction. Something to lead an audience down a rabbit trail. But it could lead right back to the truth that it started from. In other words, the shirt became the truth, but he said it wasn't relevant at the time, which led people to discuss if it was or was not. Ultimately, they learned it was, but at the time it caused uncertainty.

By this logic though, everything they ever say ever can be considered a red herring because anyone can speculate or doubt what they say and come up with ridiculous theories for anything.

I really don't care what the next job is. I'll play it anyway (probably after RDM). I think it will be BLU. It makes more sense than an obscure Sam Raini, or one picture reference, even with the files. But who knows?

You can think it's BLU all you want, it doesn't negate the substantial evidence that SAM is next even despite the data files. It's funny you talk about misderection yet still think BLU is more viable than SAM, when Yoshida has very recently used BLU specifically during the JP fanfest as a misderection to avoid discussing/acknowledging SAM.
By your logic, he's used Blue Mage as a red herring to throw off people speculating about Samurai.

All I said, and I'll say it again, I find it rather odd that anyone would toss in files for a new job before it's announced. It seems rather trollish to me.

You act like it was intentional and not the more obvious conclusion that it was merely an oversight/mistake.